Classification of Spectrum - Principles of Spectroscopy - Engineering Chemistry 2

TL;DR

This content explains the three main types of atomic spectroscopy: atomic absorption spectroscopy (AAS), atomic emission spectroscopy (AES), and atomic fluorescence spectroscopy (AFS).

Transcript

classification of spectrum now if you see spectrum can be classified further overall we'll see in how many types it can be classified so the main types of atomic spectroscopy include atomic absorption spectroscopy known as a a s and atomic emission spectroscopy known as a II S always remember when it comes to light it can either be absorption or it... Read More

Key Insights

• 🫀 Atomic spectroscopy can be classified into three main types: AAS, AES, and AFS.
• 🙂 AAS involves the absorption of light by atoms, while AES and AFS involve the emission of light.
• ✋ AAS is commonly used in detecting trace metals due to their high energy absorption capacity.
• 🙂 AES and AFS are based on the phenomena of atoms emitting light after interacting with electromagnetic waves.

Questions & Answers

Q: What are the main types of atomic spectroscopy?

The main types of atomic spectroscopy are atomic absorption spectroscopy (AAS), atomic emission spectroscopy (AES), and atomic fluorescence spectroscopy (AFS). AAS involves the absorption of light, AES involves the emission of light, and AFS is based on the fluorescence property of atoms.

Q: How does AAS work?

AAS works by atoms absorbing ultraviolet or visible light, causing them to transition to higher energy levels. This absorption of light corresponds to the absorption of energy by the atoms. AAS is commonly used in detecting trace metals due to their high energy absorption capacity.

Q: What is the difference between AES and AFS?

The difference between AES and AFS lies in the nature of light emitted by atoms. In AES, atoms emit light when they come in contact with electromagnetic waves. In AFS, atoms emit light that is fluorescent in nature, meaning it is emitted after absorbing specific wavelengths of light.

Q: How are atoms in AES and AFS affected by light absorption and emission?

In AES, the emission of light by atoms indicates a decrease in their energy levels. This means the atoms become less activated. In AFS, the absorption and subsequent emission of light cause the atoms to rise to higher energy levels, resulting in their activation.

Summary & Key Takeaways

• Atomic spectroscopy can be classified into three main types: atomic absorption spectroscopy (AAS), atomic emission spectroscopy (AES), and atomic fluorescence spectroscopy (AFS).

• AAS involves the absorption of light by atoms, causing them to transition to higher energy levels.

• AES involves the emission of light by atoms when they come in contact with electromagnetic waves.

• AFS is based on the fluorescence property of atoms, where they emit light after absorbing specific wavelengths.